/// <summary>
/// Places a random block inside the level, using the still open exits. If <c>false</c> is returned
/// it means that no blocks can be added animaore (within a tolerance level).
/// </summary>
/// <returns><c>true</c>, if random block was added, <c>false</c> otherwise.</returns>
/// <param name="blocks">Blocks.</param>
public bool AddRandomBlock(ProbabilityVector <ConstructionBlock> blocks)
{
var exit = exits.Random();
var iter = 0;
var x = 0;
var y = 0;
if (exit != null)
{
// search for a valid exit
while (this.IsOpenExit(exit.X, exit.Y, exit.Direction) == false && iter++ < MAX_ITERATIONS)
{
if (exit.CanBeClosed)
{
// the exit was closed, we can just close it and remove it
//this.Data [exit.X, exit.Y] = this.CloseTile;
//this.exits.Remove (exit);
}
exit = exits.Random();
}
// got one, now search for a block with a valid connection
ConstructionBlock next = null;
BlockExit access = null;
do
{
next = blocks.Random();
access = next.GetAccess(exit.Direction);
if (access != null)
{
x = exit.X - access.X;
y = exit.Y - access.Y;
x += (access.Direction == "W") ? 1 : (access.Direction == "E") ? -1 : 0;
y += (access.Direction == "N") ? 1 : (access.Direction == "S") ? -1 : 0;
if (this.CanPlaceBlock(next, x, y) == false)
{
access = null;
}
}
} while (access == null && iter++ < MAX_ITERATIONS);
// found a good block? place it
if (iter < MAX_ITERATIONS)
{
// BEFORE placing the block remove the used exit
this.exits.Remove(exit);
this.PlaceBlock(next, x, y);
return(true);
}
}
return(false);
}
public bool AddBlock(ConstructionBlock next)
{
// search for a valid exit
BlockExit access;
BlockExit exit;
var iter = 0;
var x = 0;
var y = 0;
do
{
exit = exits.Random();
while (this.IsOpenExit(exit.X, exit.Y, exit.Direction) == false && iter++ < MAX_ITERATIONS)
{
if (exit.CanBeClosed)
{
// the exit was closed, we can just close it and remove it
//this.Data [exit.X, exit.Y] = this.CloseTile;
//this.exits.Remove (exit);
}
exit = exits.Random();
}
access = next.GetAccess(exit.Direction);
if (access != null)
{
x = exit.X - access.X;
y = exit.Y - access.Y;
x += (access.Direction == "W") ? 1 : (access.Direction == "E") ? -1 : 0;
y += (access.Direction == "N") ? 1 : (access.Direction == "S") ? -1 : 0;
if (this.CanPlaceBlock(next, x, y) == false)
{
access = null;
}
}
} while (access == null && iter++ < MAX_ITERATIONS);
if (iter < MAX_ITERATIONS)
{
// BEFORE placing the block remove the used exit
this.exits.Remove(exit);
this.PlaceBlock(next, x, y);
return(true);
}
return(false);
}
